This Ingersoll Rand air impact wrench combines a 6-vane, high-output air motor, through-bolt construction, ergonomic handle and housing design to create a tool with increased power and durability. Drive (in.): 3/4, Average Air Consumption (CFM): 10, Noise Level (dB): 98, Min. Hose Size (in.): 1/2, Working Torque (ft.-lb.): 300-1,000, Max. Torque (ft.-lbs.): 1,250, Variable Speed: Yes, Reversible: Yes, Inlet Size (in.): 3/8, Speed - No Load (RPM): 6,000, Tool Length (in.): 8 1/2, Tool Weight (lbs.): 11.8, CFM at Load: 46, Impacts Per Minute (IPM): 1,250